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During a national debate on changes to health care, a cable news service performs an opinion poll of 610 small-business owners. It shows that 76% of small-business owners do not approve of the changes.
Develop a 90% confidence interval for the proportion opposing health care changes. (Round your answers to 4 decimal places.)
Recognize the given samples are independent samples or matched pairs.
Accidentally typed in error as a 415, what would be the impact on the following statistics? Answer with increase, decrease, or remain the same.
if a couple plans to have 10 children what is the probability that there will be a least one girl? if the couple
What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience?
Define the null hypothesis. If the null hypothesis is rejected then? Read the Z statistic from the normal distribution table:
Suppose the credit center selects five cardholders at random. What is the probability that all five cardholders will pay their new monthly balance in full before the payment due date?
events a and b are mutually exclusive. suppose event a occurs with probability 0.29 and event b occurs with probability
How many voters required to be sampled to evaluate the proportion within 0.05 with 95% confidence?
The population in favor of Candidate A is significantly more than 80%. The value of the test statistic and the p-value respectively are?
What is the probability that Company B would charge more than Company A to drill a well - The depths of wells drilled in this area have a normal distribution with a mean of 250 feet and a standard deviation of 40 feet.
Assume that the president is correct and p = 0.26. What is the sampling distribution of for this study? What is the probability that the sample proportion will be between .20 and .40 (to 4 decimals)?
A researcher selects a random example of college students and measures number of hours they spend watching television per week and their grade point average.
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